### Abstract

Samples with nominal starting compositions (Tl_{1-x}Re_{x})Sr_{2}CaCu_{2}O_{7-δ} (x = 0.05-0.30) were prepared by the solid state reaction method. Superconducting fluctuations and excess conductivity analysis was carried out using the Aslamazov-Larkin (AL) theory to determine the dimension of fluctuation induced conductivity λ. The Lawrence-Donaich (LD) theory was used to calculate the coherence length ξ_{c}(0), Josephson coupling J, and anisotropy γ = (ξ_{ab}(0)/ξ_{c}(0)). XRD patterns indicated that the samples were dominantly Tl-1212 phase. Substitution of Re in place of Tl in (Tl_{1-x}Re_{x})Sr_{2}CaCu_{2}O_{7-δ} showed T_{c onset} between 70 K (x = 0.05) and 82 K (x = 0.25). Excess conductivity analyses showed that Re substitution induced 2D-to-3D conductivity transition with the highest transition temperature, T2D-3D observed at x = 0.25. The calculations based on Lawrence-Doniach model showed the shortest coherence length, ξ_{c}(0) and highest anisotropy(γ =13.42) for the x = 0.25 sample.

Original language | English |
---|---|

Pages (from-to) | 140-150 |

Number of pages | 11 |

Journal | International Journal of Electrochemical Science |

Volume | 10 |

Issue number | 1 |

Publication status | Published - 2015 |

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### Keywords

- Excess conductivity
- Rhenium
- Solid state reaction
- Tl-1212

### ASJC Scopus subject areas

- Electrochemistry

### Cite this

**Superconducting fluctuations and excess conductivity analysis of Re substituted (Tl _{1-x}Re_{x})Sr_{2}CaCu_{2}O_{7-δ}
.** / Al-Sharabi, Annas; Abd. Shukor, Roslan.

Research output: Contribution to journal › Article

_{1-x}Re

_{x})Sr

_{2}CaCu

_{2}O

_{7-δ}',

*International Journal of Electrochemical Science*, vol. 10, no. 1, pp. 140-150.

}

TY - JOUR

T1 - Superconducting fluctuations and excess conductivity analysis of Re substituted (Tl1-xRex)Sr2CaCu2O7-δ

AU - Al-Sharabi, Annas

AU - Abd. Shukor, Roslan

PY - 2015

Y1 - 2015

N2 - Samples with nominal starting compositions (Tl1-xRex)Sr2CaCu2O7-δ (x = 0.05-0.30) were prepared by the solid state reaction method. Superconducting fluctuations and excess conductivity analysis was carried out using the Aslamazov-Larkin (AL) theory to determine the dimension of fluctuation induced conductivity λ. The Lawrence-Donaich (LD) theory was used to calculate the coherence length ξc(0), Josephson coupling J, and anisotropy γ = (ξab(0)/ξc(0)). XRD patterns indicated that the samples were dominantly Tl-1212 phase. Substitution of Re in place of Tl in (Tl1-xRex)Sr2CaCu2O7-δ showed Tc onset between 70 K (x = 0.05) and 82 K (x = 0.25). Excess conductivity analyses showed that Re substitution induced 2D-to-3D conductivity transition with the highest transition temperature, T2D-3D observed at x = 0.25. The calculations based on Lawrence-Doniach model showed the shortest coherence length, ξc(0) and highest anisotropy(γ =13.42) for the x = 0.25 sample.

AB - Samples with nominal starting compositions (Tl1-xRex)Sr2CaCu2O7-δ (x = 0.05-0.30) were prepared by the solid state reaction method. Superconducting fluctuations and excess conductivity analysis was carried out using the Aslamazov-Larkin (AL) theory to determine the dimension of fluctuation induced conductivity λ. The Lawrence-Donaich (LD) theory was used to calculate the coherence length ξc(0), Josephson coupling J, and anisotropy γ = (ξab(0)/ξc(0)). XRD patterns indicated that the samples were dominantly Tl-1212 phase. Substitution of Re in place of Tl in (Tl1-xRex)Sr2CaCu2O7-δ showed Tc onset between 70 K (x = 0.05) and 82 K (x = 0.25). Excess conductivity analyses showed that Re substitution induced 2D-to-3D conductivity transition with the highest transition temperature, T2D-3D observed at x = 0.25. The calculations based on Lawrence-Doniach model showed the shortest coherence length, ξc(0) and highest anisotropy(γ =13.42) for the x = 0.25 sample.

KW - Excess conductivity

KW - Rhenium

KW - Solid state reaction

KW - Tl-1212

UR - http://www.scopus.com/inward/record.url?scp=84921639793&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84921639793&partnerID=8YFLogxK

M3 - Article

VL - 10

SP - 140

EP - 150

JO - International Journal of Electrochemical Science

JF - International Journal of Electrochemical Science

SN - 1452-3981

IS - 1

ER -